AsRaster Class Reference

Inheritance diagram for AsRaster:

Collaboration diagram for AsRaster:

Public Member Functions
String	getURI ()
Value	evaluate (ValueFactory valueFactory, Value... args) throws ValueExprEvaluationException

Protected Member Functions
Geometry	relation (Geometry geom, String pixeltype, Double value, Double nodataval, Boolean touched)

Member Function Documentation

evaluate()

Value evaluate ( ValueFactory  valueFactory, Value...  args  ) throws ValueExprEvaluationException

inherited

                                                                                                            {
                if (args.length != 5) {
                        throw new ValueExprEvaluationException(getURI() + " requires exactly 2 arguments, got " + args.length);
                }
                LiteralType l=LiteralRegistry.getLiteral(((Literal)args[0]).getDatatype().toString());
                if(l instanceof VectorLiteral) {
                        Geometry geom=((VectorLiteral)l).read(args[0].stringValue());
                        String pixeltype=args[1].stringValue();
                        Double value=Double.valueOf(args[2].stringValue());
                        Double nodata=Double.valueOf(args[3].stringValue());
                        Boolean touched=Boolean.valueOf(args[4].stringValue());
                        Geometry result = relation(geom,pixeltype,value,nodata,touched);
                        return valueFactory.createLiteral(((VectorLiteral) l).unparse(result),((Literal)args[0]).getDatatype());
                }
                throw new ValueExprEvaluationException("Arguments given are not geometry literals");
        }

References LiteralRegistry.getLiteral(), and GeometricRasterFunction.relation().

getURI()

String getURI

(

)

                               {
                return POSTGIS.st_asRaster.stringValue();
        }

References POSTGIS.st_asRaster.

relation()

Geometry relation ( Geometry  geom, String  pixeltype, Double  value, Double  nodataval, Boolean  touched  )

protected

Reimplemented from GeometricRasterFunction.

                                                                                                                      {
                
                // TODO Auto-generated method stub
                return null;
        }